1 Samuel 20:30Then Saul's anger burned against Jonathan, and he said to him, "You son of a perverse and rebellious woman! Do I not know that you have chosen the son of Jesse to your own shame and to the disgrace of the mother who bore you?

1 Samuel 23:17saying, "Do not be afraid, for my father Saul will never lay a hand on you. And you will be king over Israel, and I will be your second-in-command. Even my father Saul knows this is true."

1 Samuel 26:16This thing you have done is not good. As surely as the LORD lives, all of you deserve to die, since you did not protect your lord, the LORD's anointed. Now look around. Where are the king's spear and water jug that were by his head?"

2 Samuel 12:5David burned with anger against the man and said to Nathan: "As surely as the LORD lives, the man who did this deserves to die!

Treasury of Scripture

For as long as the son of Jesse lives on the ground, you shall not be established, nor your kingdom. Why now send and fetch him to me, for he shall surely die.

1 Samuel 19:6,11-15 And Saul hearkened unto the voice of Jonathan: and Saul sware, As the LORD liveth, he shall not be slain…

1 Samuel 26:16 This thing is not good that thou hast done. As the LORD liveth, ye are worthy to die, because ye have not kept your master, the LORD'S anointed. And now see where the king's spear is, and the cruse of water that was at his bolster.

2 Samuel 19:28 For all of my father's house were but dead men before my lord the king: yet didst thou set thy servant among them that did eat at thine own table. What right therefore have I yet to cry any more unto the king?

Psalm 79:11 Let the sighing of the prisoner come before thee; according to the greatness of thy power preserve thou those that are appointed to die;

(31) Thou shalt not be established.--Here the king gives expression to the thought which was ever torturing that poor diseased brain of his--David, his own kind physician, his faithful soldier, and his son's dearest friend and loved companion, was plotting basely against that master for whom he had done so much, and the son whom he loved so well.

Saul, in his blind fury, goes on to betray his fell purpose when he exclaims, "he shall surely die." His command, "Send and fetch him unto me," tells us that the murder had been pre-arranged to take place at the feast. Doubtless those rough soldier chiefs sitting round the royal table would be ready at any moment to carry into effect their master's savage behest.

20:24-34 None were more constant than David in attending holy duties; nor had he been absent, but self-preservation obliged him to withdraw. In great peril present opportunities for Divine ordinances may be waved. But it is bad for us, except in case of necessity, to omit any opportunity of statedly attending on them. Jonathan did wisely and well for himself and family, to secure an interest in David, yet for this he is blamed. It is good to take God's people for our people. It will prove to our advantage at last, however it may now be thought against our interest. Saul was outrageous. What savage beasts, and worse, does anger make men!